CN203180598U - Wind-storage and light-storage typed station for power charging and battery replacing for electric automobiles - Google Patents

Abstract

The wind-solar-storage electric vehicle charging and swapping station belongs to the field of power supply system; its purpose is to solve the problem that the existing electric vehicle charging and swapping station can only replace the battery of the electric vehicle, but not the battery of the electric vehicle. The problem of charging; the 380V bus L4 is connected to the photovoltaic system power supply bus L1, load power supply bus L2 and wind power system power supply bus L3 through the photovoltaic system grid-connected circuit breaker, load circuit breaker and wind power system grid-connected circuit breaker respectively. The photovoltaic system power supply bus L1 is connected to the load power supply bus L2 through the photovoltaic access circuit breaker, and then connected to the wind power generation system power supply bus L3 through the wind power generation circuit breaker. A photovoltaic power generation system is installed under the photovoltaic system power supply bus L1, and the load power supply bus L2 An electric vehicle charging and swapping station and a storage battery energy storage system are arranged underneath, and a wind power generating system is arranged under the power supply bus L3 of the wind power generation system; the utility model is suitable for the field of electric vehicle charging and swapping stations.

Description

Wind-storage storage electric vehicle charging and swapping station

technical field

The utility model belongs to the field of power supply systems.

Background technique

At present, the United States, Japan, Israel, France, the United Kingdom and other countries have begun to build their own electric vehicle charging facilities, mainly for charging. Among them, the United States and Israel are carrying out related work on power station replacement. In 2010, the State Grid Corporation of China put forward the principle of "battery replacement, supplemented by plug-in charging, centralized charging, and unified distribution" for the charging mode of electric vehicles. In 2011, the State Grid Corporation of China built my country's first electric vehicle intelligent charging and swapping service network in Zhejiang, and it is also the world's first electric vehicle intelligent charging and swapping service network that realizes intercity interconnection. China's swapping stations have taken the lead in the world status.

Therefore, the construction of an intelligent charging and swapping service network of charging and swapping stations is the top priority, and clean and renewable energy power generation is an important means to solve energy problems, which has become the current world development trend. Therefore, the construction of electric vehicle charging and swapping stations will be combined with clean and renewable energy. Energy power generation, that is, the mode of "clean and renewable energy power generation → energy storage → charging and swapping", which can not only reduce the impact of electric vehicle charging and swapping on the power grid, but also be cleaner and more environmentally friendly, and can be used in remote areas where the grid conditions are not available. Construction, or as an emergency charging facility on long-distance highways, so the research and construction of this model of charging and swapping stations is of great significance to the promotion of the application of electric vehicles and the construction of an energy-saving and environmentally friendly society, and will have a very broad application prospect.

At present, electric vehicle charging and swapping stations use the AC grid as the power supply, and there are the following problems: 1. Due to the shortage of national grid resources, complete reliance on the national grid will increase the burden on the country; 2. Most of the current electric vehicle charging and swapping stations are equipped with battery packs , It can also work in case of a power failure, but the capacity of the storage battery is limited, and there is nothing that can be done when the power failure occurs for a long time.

Utility model content

In order to solve the problem that the battery of the electric vehicle can only be replaced but not charged in the case of a power outage in the existing electric vehicle charging and swapping station, the utility model proposes a wind-solar storage system Electric vehicle charging and swapping stations.

Wind-solar-storage electric vehicle charging and swapping station, which includes power supply system, battery energy storage system, electric vehicle charging and swapping station, station load, monitoring system, main circuit breaker, photovoltaic system grid-connected circuit breaker, photovoltaic access circuit breaker, solar energy Battery component circuit breakers, load circuit breakers, battery pack circuit breakers, wind power generation circuit breakers, wind power generation system grid-connected circuit breakers and fan circuit breakers; the power supply system includes AC power grids, wind power generation systems and photovoltaic power generation systems,

The electrical signal output terminal of the photovoltaic power generation system is connected to the power supply bus of the photovoltaic system through the circuit breaker of the solar cell module. The power supply bus of the photovoltaic system is connected to the 380V bus through the grid-connected circuit breaker of the photovoltaic system. connect;

The photovoltaic system power supply bus is connected to the load power supply bus through a photovoltaic access circuit breaker. The electric vehicle charging and swapping station and station loads are both connected to the load power supply bus. The power supply bus is connected to the charging power supply signal input terminal of the battery energy storage system through the battery group circuit breaker, and the load power supply bus is connected to the wind power generation system power supply bus through the wind power generation circuit breaker, and the wind power generation system power supply bus is connected to the grid through the wind power generation system The circuit breaker is connected to the 380V bus. The power supply bus of the wind power generation system is connected to the electrical signal output end of the wind power generation system through the fan circuit breaker. The monitoring signal output end of the monitoring system is respectively connected to the wind power generation system, photovoltaic power generation system and battery storage through the 485 bus The monitoring signal input terminal of the energy storage system is connected, and the data signal output terminal of the battery energy storage system is connected to the data signal input terminal of the photovoltaic power generation system through the 485 bus or CAN bus.

The monitoring system is the guarantee system for the safe operation of the wind-solar-storage electric vehicle charging and swapping station.

The power supply monitoring system in the monitoring system is used to monitor the operation of the power supply system, display the main wiring of the power supply system, and detect electrical quantities such as power, electricity, and current;

The charging monitoring system in the monitoring system is used to monitor the charging information, charging status and charging settlement of the electric vehicle battery;

The power quality monitoring system in the monitoring system is used to monitor power quality, total current distortion rate, total voltage distortion rate, each current distortion rate and each voltage distortion;

In the monitoring system, the video monitoring system is used to monitor the security situation of the electric vehicle charging and swapping station, and the electric vehicle charging and swapping station is monitored through the camera;

The power supply system mainly provides power for the charging equipment, and also provides power for the monitoring system, lighting and other station loads, which is the basis for the operation of the entire charging station.

The wind power generation system and the photovoltaic power generation system are responsible for providing power for the electric vehicle charging and swapping station on the one hand, and providing power for the AC grid on the other hand.

The power supply system is the core part of the electric vehicle charging and swapping station, including charging cabinets, electric vehicle charging and swapping stations, lines and other facilities. The electric vehicle charging and swapping station is a charging facility that provides fast and slow charging for electric vehicles.

The photovoltaic power generation system adopts a decentralized grid-connected method. The decentralized grid-connected method uses small outdoor grid-connected inverters to be installed on the roof of the building, and directly converts the direct current generated by solar cell modules into 380V alternating current, and then converts each The AC side of the small inverter is combined and connected to the distribution network.

The electric vehicle charging and swapping station is a charging facility that provides fast and slow charging for electric vehicles. It has two working states, namely the isolated grid operation state and the grid-connected operation state;

When the electric vehicle charging and swapping station is in the state of isolated grid operation, during the day, when the sun is sufficient, the photovoltaic power generation system supplies power for the electric vehicle charging and swapping station; when the sunlight is insufficient, the photovoltaic power generation system is not enough to supply power for the electric vehicle charging and swapping station , the battery energy storage system and the photovoltaic power generation system jointly provide electric energy for the electric vehicle charging and swapping station; at night, the wind power generation system and the battery energy storage system provide electric energy for the electric vehicle charging and swapping station.

When the electric vehicle charging and swapping station is in the state of grid-connected operation, during the day, when the sun is sufficient, the photovoltaic power generation system supplies power for the electric vehicle charging and swapping station; when the sunlight is insufficient, the photovoltaic power generation system is not enough to supply power for the electric vehicle charging and swapping station At night, when the wind energy is sufficient, the wind power generation system supplies power for the electric vehicle charging and swapping station; when the wind energy is insufficient, the wind power system and the AC grid Power supply for electric vehicle charging and swapping stations.

The photovoltaic power generation system includes a photovoltaic power supply management system, a solar cell assembly and a grid-connected inverter, the control signal output end of the photovoltaic power supply management system is connected to the control signal input end of the solar cell assembly, and the signal output of the solar cell assembly The terminal is connected to the DC signal input terminal of the grid-connected inverter. The AC signal output terminal of the grid-connected inverter is the electrical signal output terminal of the photovoltaic power generation system, and the data signal input terminal of the photovoltaic power supply management system is the data signal of the photovoltaic power generation system. Signal input terminal, the monitoring signal input terminal of the photovoltaic power supply management system is the monitoring signal input terminal of the photovoltaic power generation system.

The battery energy storage system includes a battery management system, a battery pack and a bidirectional inverter, the input and output terminals of the battery management system are connected to the input and output terminals of the battery pack, and the output terminals of the battery pack are connected to the bidirectional inverter The other end of the bidirectional inverter is the signal input end of the battery energy storage system, the signal input end of the battery management system is the monitoring signal input end of the battery energy storage system, and the data signal output end of the battery management system is The data signal output terminal of the battery energy storage system.

The battery management system includes a temperature sensor and a Hall sensor, the temperature sensor is used to collect the temperature signal of the battery pack, and the Hall sensor is used to collect the current signal and the voltage signal of the battery pack.

The temperature sensor in the battery management system collects the temperature signal of the battery pack, and the Hall sensor in the battery management system collects the current signal and voltage signal of the battery pack; it estimates the remaining power of the battery pack based on all the collected signals above, when the battery pack When the voltage is too low or too high, or the temperature is too high, it will alarm; the battery management system balances the energy of the battery pack to ensure the consistency of the power of each single battery in the battery pack.

The wind power generation system includes a fan, a wind power generation management system and a grid-connected inverter, the control signal output end of the wind power generation management system is connected to the signal input end of the fan, and the signal output end of the fan is connected to the grid-connected inverter The inverter signal input end of the grid-connected inverter is connected to the inverter signal output end of the grid-connected inverter, which is the electrical signal output end of the wind power generation system, and the signal input end of the wind power generation management system is the wind power generation system monitoring signal input end.

The photovoltaic power generation system described adopts a decentralized grid connection method.

The beneficial effect brought by the utility model is that the electric vehicle charging and swapping station can not only replace the storage battery of the electric vehicle but also charge the storage battery of the electric vehicle under the condition of power failure.

Description of drawings

Fig. 1 is a schematic structural view of the wind-solar-storage electric vehicle charging and swapping station described in the present invention; L1 represents the photovoltaic system power supply bus; L2 represents the load power supply bus; L3 represents the wind power generation system power supply bus; L4 represents the 380V bus.

Detailed ways

Specific embodiment 1: Referring to Fig. 1 to illustrate this embodiment, the wind-solar-storage electric vehicle charging and swapping station described in this embodiment includes a power supply system, a battery energy storage system, an electric vehicle charging and swapping station 6, a station load 7, Monitoring system 17, main circuit breaker 20, photovoltaic system grid-connected circuit breaker 5, photovoltaic access circuit breaker 12, solar cell module circuit breaker 4, load circuit breaker 13, battery pack circuit breaker 11, wind power generation circuit breaker 14, wind power generation System grid-connected circuit breaker 19 and fan circuit breaker 18; described power supply system includes AC grid, wind power generation system and photovoltaic power generation system,

The electrical signal output end of the photovoltaic power generation system is connected to the photovoltaic system power supply bus L1 through the solar cell module circuit breaker 4, and the photovoltaic system power supply bus L1 is connected to the 380V bus L4 through the photovoltaic system grid-connected circuit breaker 5, and the 380V bus L4 passes through The main circuit breaker 20 is connected to the AC grid;

The photovoltaic system power supply bus L1 is connected to the load power supply bus L2 through the photovoltaic access circuit breaker 12, the electric vehicle charging and swapping station 6 and the station load 7 are both connected to the load power supply bus L2, and the load power supply bus L2 passes through the load circuit breaker 13 is connected to the 380V bus L4, the load power supply bus L2 is connected to the charging power signal input end of the battery energy storage system through the battery pack circuit breaker 11, and the load power supply bus L2 is connected to the wind power generation system power supply bus L3 through the wind power generation circuit breaker 14 , the wind power generation system power supply bus L3 is connected to the 380V bus L4 through the wind power generation system grid-connected circuit breaker 19, the wind power generation system power supply bus L3 is connected to the electrical signal output end of the wind power generation system through the fan circuit breaker 18, and the monitoring system 17 The monitoring signal output terminal of the battery energy storage system is respectively connected to the monitoring signal input terminal of the wind power generation system, photovoltaic power generation system and battery energy storage system through the 485 bus, and the data signal output terminal of the battery energy storage system is connected to the data of the photovoltaic power generation system through the 485 bus or CAN bus. Signal input connection.

The monitoring system 17 is a guarantee system for the safe operation of the wind-solar-storage electric vehicle charging and swapping station.

The power supply monitoring system in the monitoring system 17 is used to monitor the operation of the power supply system, display the main wiring of the power supply system, and detect electrical quantities such as power, electricity and current;

The charging monitoring system in the monitoring system 17 is used to monitor the charging information, charging status, and charging settlement of the battery of the electric vehicle;

The power quality monitoring system in the monitoring system 17 is used to monitor power quality, total current distortion rate, total voltage distortion rate, each current distortion rate and each voltage distortion;

The video monitoring system in the monitoring system 17 is used to monitor the security situation of the electric vehicle charging and swapping station 6, and monitors the electric vehicle charging and swapping station 6 through a camera;

The power supply system mainly provides power for charging equipment, and also provides power for monitoring system 17, lighting and other station loads, which is the basis for the operation of the entire charging station.

The wind power generation system and the photovoltaic power generation system are responsible for providing power for the electric vehicle charging and swapping station 6 on the one hand, and are responsible for providing power for the AC grid on the other hand.

The power supply system is the core part of the electric vehicle charging and swapping station 6, including facilities such as charging cabinets, electric vehicle charging and swapping stations 6 and lines. Electric vehicle charging and swapping station 6 is a charging facility that provides fast and slow charging for electric vehicles.

The photovoltaic power generation system adopts a decentralized grid-connected method. The decentralized grid-connected method is to install a small outdoor grid-connected inverter on the roof of the building, and directly convert the direct current generated by the solar cell module 2 into a 380V alternating current, and then convert each The AC side of the small inverters will be connected to the distribution network after confluence.

The electric vehicle charging and swapping station 6 is a charging facility that provides fast and slow charging for electric vehicles. It has two working states, namely the isolated grid operation state and the grid-connected operation state;

When the electric vehicle charging and swapping station 6 is in the state of isolated grid operation, during the day, when there is sufficient sunlight, the photovoltaic power generation system supplies power for the electric vehicle charging and swapping station 6; when the sunlight is insufficient, the photovoltaic power generation system is not enough to power the electric vehicle charging and swapping station 6. When supplying power, the battery energy storage system and the photovoltaic power generation system jointly provide electric energy for the electric vehicle charging and swapping station 6; at night, the wind power generation system and the battery energy storage system provide electric energy for the electric vehicle charging and swapping station 6.

When the electric vehicle charging and swapping station 6 is in grid-connected operation state, during the day, when the sunlight is sufficient, the photovoltaic power generation system supplies power for the electric vehicle charging and swapping station 6; when the sunlight is insufficient, the photovoltaic power generation system is not enough to charge and replace the electric vehicle When the power station 6 supplies power, the photovoltaic power generation system and the AC power grid supply power to the electric vehicle charging and swapping station 6; at night, when the wind energy is sufficient, the wind power generation system supplies power to the electric vehicle charging and swapping station 6; when the wind energy is insufficient, the wind power The power generation system and the AC power grid provide electric energy for the electric vehicle charging and swapping station 6 .

Specific embodiment 2: Referring to Fig. 1 to illustrate this embodiment, the difference between this embodiment and the wind-solar-storage electric vehicle charging and swapping station described in Specific Embodiment 1 is that the photovoltaic power generation system includes a photovoltaic power supply management system 1, a solar energy The battery assembly 2 and the grid-connected inverter 3-1, the control signal output end of the photovoltaic power supply management system 1 is connected to the control signal input end of the solar cell assembly 2, and the signal output end of the solar cell assembly 2 is connected to the grid-connected inverter The DC signal input terminal of the inverter 3-1 is connected, the AC signal output terminal of the grid-connected inverter 3-1 is the electrical signal output terminal of the photovoltaic power generation system, and the data signal input terminal of the photovoltaic power supply management system 1 is the photovoltaic power generation system. The data signal input terminal, the monitoring signal input terminal of the photovoltaic power supply management system 1 is the monitoring signal input terminal of the photovoltaic power generation system.

Specific embodiment 3: Refer to FIG. 1 to illustrate this embodiment. The difference between this embodiment and the wind-storage-storage electric vehicle charging and swapping station described in Embodiment 1 is that the battery energy storage system includes a battery management system 8, a battery group 9 and a bidirectional inverter 10, the input and output ends of the battery management system 8 are connected to the input and output ends of the battery pack 9, and the output end of the battery pack 9 is connected to one end of the bidirectional inverter 10, the bidirectional The other end of the inverter 10 is the signal input end of the battery energy storage system, the signal input end of the battery management system 8 is the monitoring signal input end of the battery energy storage system, and the data signal output end of the battery management system 8 is the battery energy storage system The data signal output terminal.

Embodiment 4: Refer to Fig. 1 to illustrate this embodiment. The difference between this embodiment and the solar-storage electric vehicle charging and swapping station described in Embodiment 3 is that the battery management system (8) includes a temperature sensor and a Hall sensor, the temperature sensor is used to collect the temperature signal of the battery pack (9), and the Hall sensor is used to collect the current signal and voltage signal of the battery pack (9).

The temperature sensor in the battery management system 8 collects the temperature signal of the battery pack 9, and the Hall sensor in the battery management system 8 collects the current signal and the voltage signal of the battery pack 9; Electricity, when the voltage of the battery pack 9 is too low or too high, or the temperature is too high, an alarm is issued; the battery management system 8 balances the energy of the battery pack 9 to ensure the consistency of the power of each single battery in the battery pack.

Embodiment 5: Refer to FIG. 1 to illustrate this embodiment. The difference between this embodiment and the wind-storage-storage electric vehicle charging and swapping station described in Embodiment 1 is that the wind power generation system includes a fan 16 and a wind power generation management system. 15 and the grid-connected inverter 3-2, the control signal output end of the wind power generation management system 15 is connected to the signal input end of the wind turbine 16, and the signal output end of the wind turbine 16 is connected to the inverter of the grid-connected inverter 3-2 The inverter signal output end of the grid-connected inverter 3-2 is the electrical signal output end of the wind power generation system, and the signal input end of the wind power generation management system 15 is the wind power generation system monitoring signal input end.

Specific embodiment 6: Refer to Fig. 1 to illustrate this embodiment. The difference between this embodiment and the wind-storage-storage electric vehicle charging and swapping station described in Embodiment 2 is that the photovoltaic power generation system adopts a decentralized grid-connected mode .

Claims (6)

1. Wind-solar-storage electric vehicle charging and swapping station, which is characterized in that it includes a power supply system, battery energy storage system, electric vehicle charging and swapping station (6), station load (7), monitoring system (17), and main circuit breaker (20), photovoltaic system grid-connected circuit breaker (5), photovoltaic access circuit breaker (12), solar cell module circuit breaker (4), load circuit breaker (13), battery pack circuit breaker (11), wind power generation circuit breaker device (14), wind power generation system grid-connected circuit breaker (19) and fan circuit breaker (18); the power supply system includes AC power grid, wind power generation system and photovoltaic power generation system, The electrical signal output end of the photovoltaic power generation system is connected to the photovoltaic system power supply bus L1 through the solar cell module circuit breaker (4), and the photovoltaic system power supply bus L1 is connected to the 380V bus L4 through the photovoltaic system grid-connected circuit breaker (5). The 380V bus L4 is connected to the AC power grid through the main circuit breaker (20); The photovoltaic system power supply bus L1 is connected to the load power supply bus L2 through the photovoltaic access circuit breaker (12). The bus L2 is connected to the 380V bus L4 through the load circuit breaker (13). The load power supply bus L2 is connected to the charging power signal input end of the battery energy storage system through the battery pack circuit breaker (11). The load power supply bus L2 is disconnected through the wind power generation The device (14) is connected to the power supply bus L3 of the wind power generation system. The power supply bus L3 of the wind power generation system is connected to the 380V bus L4 through the grid-connected circuit breaker (19) of the wind power generation system. The power supply bus L3 of the wind power generation system is connected through the fan circuit breaker ( 18) Connect with the electrical signal output end of the wind power generation system, the monitoring signal output end of the monitoring system (17) is respectively connected with the monitoring signal input ends of the wind power generation system, photovoltaic power generation system and battery energy storage system through the 485 bus, and the battery energy storage system The data signal output end of the system is connected with the data signal input end of the photovoltaic power generation system through the 485 bus or the CAN bus. 2. The wind-solar-storage electric vehicle charging and swapping station according to claim 1, characterized in that the photovoltaic power generation system includes a photovoltaic power supply management system (1), a solar cell module (2) and a grid-connected inverter ( 3-1), the control signal output terminal of the photovoltaic power supply management system (1) is connected to the control signal input terminal of the solar battery module (2), and the signal output terminal of the solar battery module (2) is connected to the grid-connected inverter ( 3-1) is connected to the DC signal input terminal, the AC signal output terminal of the grid-connected inverter (3-1) is the electrical signal output terminal of the photovoltaic power generation system, and the data signal input terminal of the photovoltaic power supply management system (1) is The data signal input terminal of the photovoltaic power generation system and the monitoring signal input terminal of the photovoltaic power supply management system (1) are the monitoring signal input terminals of the photovoltaic power generation system. 3. The wind-solar-storage electric vehicle charging and swapping station according to claim 1, characterized in that, the battery energy storage system includes a battery management system (8), a battery pack (9) and a bidirectional inverter (10) , the input and output terminals of the battery management system (8) are connected to the input and output terminals of the battery pack (9), the output terminals of the battery pack (9) are connected to one end of the bidirectional inverter (10), and the bidirectional The other end of the inverter (10) is the signal input end of the battery energy storage system, the signal input end of the battery management system (8) is the monitoring signal input end of the battery energy storage system, and the data signal output end of the battery management system (8) Terminal is the data signal output terminal of the battery energy storage system. 4. The wind-solar-storage electric vehicle charging and swapping station according to claim 3, characterized in that, the battery management system (8) includes a temperature sensor and a Hall sensor, and the temperature sensor is used to collect battery pack ( 9), the Hall sensor is used to collect the current signal and voltage signal of the battery pack (9). 5. The wind-solar-storage electric vehicle charging and swapping station according to claim 1, characterized in that, the wind power generation system includes a fan (16), a wind power generation management system (15) and a grid-connected inverter (3- 2), the control signal output terminal of the wind power generation management system (15) is connected to the signal input terminal of the wind turbine (16), and the signal output terminal of the wind turbine (16) is connected to the inverter of the grid-connected inverter (3-2) The inverter signal output end of the grid-connected inverter (3-2) is the electrical signal output end of the wind power generation system, and the signal input end of the wind power generation management system (15) is the monitoring signal of the wind power generation system input. 6. The wind-solar-storage electric vehicle charging and swapping station according to claim 2, wherein the photovoltaic power generation system adopts a decentralized grid-connected mode.

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